Prediction of forming limit curve at fracture for sheet metal using new ductile fracture criterion

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2018

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Elsevier Science Bv

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Manufacturing Engineering
(2003)
Opened in 2003 with the aim to graduate experts in the field of machine-production, our Department is among the firsts in our country to offer education in English. The Manufacturing Engineering program focuses on the manufacturing technologies that shape materials from raw materials to final products by means of analytical, experimental and numerical modeling methods. First Manufacturing Engineering Program to be engineered by Müdek, our department aims to graduate creative and innovative Manufacturing Engineers that are knowledgeable in the current technology, and are able to use production resources in an effective and sustainable way that never disregards environmental facts. As the first Department to implement the Cooperative Education Program at Atılım University in coordination with institutions from the industry, the Manufacturing Engineering offers a practice-oriented approach in education with its laboratory infrastructure and research opportunities. The curriculum at our department is supported by current engineering software, and catered to creating engineers equipped to meet the needs of the production industry.

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Abstract

The application of ductile fracture criteria (DFCs) in numerical analysis of sheet metal forming processes can lead to the accurate determination of the fracture initiation. In this study, a new uncoupled ductile fracture criterion (DFC) has been developed which considers the effects of material parameters on the forming limit curves (FLCs) and can be easily implemented in the finite element codes. Two different constitutive models have been employed with the new DFC in order to evaluate the results obtained for fracture prediction. Various experimental tests have been utilized to validate the new criterion and its results are also compared with other well-known uncoupled DFCs. It is observed that the new criterion predicts the ductile fracture for all aluminum, steel and stainless steel materials better than the former criteria.

Description

Dizaji, Shahram A./0000-0001-7256-2991; Darendeliler, Haluk/0000-0002-7814-7294
ORCID
Dizaji, Shahram A. ORCID logo
Darendeliler, Haluk ORCID logo

Keywords

Fracture, Anisotropic material, Constitutive behavior, Energy methods, Finite elements

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Volume

69

Issue

Start Page

255

End Page

265

URI

https://doi.org/10.1016/j.euromechsol.2018.01.003
 https://hdl.handle.net/20.500.14411/2716

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